A Fully Transparent, Stretchable Multi-Layered Water Barrier Thin Film for the Passivation of Underwater Device Applications

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Recent developments in wearable and embeddable electronic devices in physiological condition, such as neuroprobe and electroceuticals, have brought forth the need for a reliable passivation layer against water permeation into the devices. On top of the excellent waterproof barrier performance, the passivation layers must also be equipped with stretchability and dermatoid softness for the reliable operation of the devices without failure in the wet environment. Here, this work demonstrates a stretchable, superhydrophobic coating with excellent water barrier performance. The stretchable water barrier coating is formed by depositing alternating layers of a highly stretchable, superhydrophobic copolymer and a crosslinked organosiloxane polymer via initiated chemical vapor deposition. During the deposition, the organosiloxane polymer penetrates into the free volume of superhydrophobic copolymer to form a highly mixed network at the interface. Accordingly, a five-layered coating shows excellent water and molecular barrier performance with no sign of degradation even at 60% of tensile strain. Moreover, this barrier film formed by vapor deposition is uniformly deposited on the substrate surface regardless of the type and morphology of the substrate. The highly stretchable water barrier coating developed in this study will serve as a promising candidate material for the passivation of various stretchable device applications.
Publisher
WILEY
Issue Date
2022-09
Language
English
Article Type
Article
Citation

ADVANCED MATERIALS INTERFACES, v.9, no.27

ISSN
2196-7350
DOI
10.1002/admi.202201019
URI
http://hdl.handle.net/10203/301383
Appears in Collection
CBE-Journal Papers(저널논문)MS-Journal Papers(저널논문)
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